Paper wire rope center



Jan. 23, 1934. M, Q DODGE 1,944,786

PAPER WIRE ROPE CENTER Filed Dec, 4, 1931 Patented Jan. 23, 1934 UNITEDSTATES PAPER WIRE ROPE CENTER Milo 0. Dodge, Auburn, N. Y., assignor toColumbian Rope Company, Auburn, N. Y., a corporation of New YorkApplication December 4, 1931. Serial No. 579,020

1 Claim.

This invention relates to improvements in wire rope centers.

Primarily, the object of the invention is to produce a wire rope centercomposed of paper, in order that the cost ofmaterials used in suchproduct will be decreased, as compared with the cost of materials usedat the present time, in production of wire rope centers.

A further object is to fabricate the center in such fashion as tosimplify its production, and thereby effect a further savings in cost.

A further object is to produce a paper wire rope center having asubstantially smooth exterior finish.

Broadly stated, therefore, the invention consists in the production of apaper wire rope center which may be produced at a comparatively lowcost, but which will allow the wire strands of a wire rope to imbed andaccommodate themselves to said center during the working of the rope orcable.

With these and other objects in view, the invention consists in certaindetails of construction and combinations and arrangements of parts, allas will hereinafter be more fully described and the novel featuresthereof particularly pointed out in the appended claim.

In the accompanying drawing,

Figure 1 illustrates one form of paper wire rope center, a portion ofthe center shown in this figure being partially untwisted to moreclearly illustrate the construction thereof;

Fig. 2 is a similar view of a modified form of center.

Wire rope centers, as a general rule, run upwards of a quarter of aninch in diameter, and in view of this, it is preferred that a papercenter be composed of a plurality of paper units, as the individualunits can be manipulated with much greater ease than would be the caseif the center was composed of a single piece of paper. It is, therefore,essential that the several units of paper be so assembled as to insuretheir retaining their proper form during handling and transportationfrom the manufacture of the center to the wire rope manufacturer.Furthermore, by fabricating the center from aplurality of paper units,it is possible, as will hereinafter be pointed out, to produce a smoothsurface on the finished product.

In that form of the invention illustrated in Fig. 1, which is bestadapted for smaller sizes of centers, one paper unit 10 is twisted uponitself to form what might be termed the core of the center, and a secondpaper unit 11 is twisted around the unit 10, the convolutions of theunit 11 overlapping one another, whereby the core unit 10 is completelycovered. As illustrated, this unit 11 is substantially flat, and as aresuit, the finished center has a substantially will retain its finishedform at all times during handling and transportation.

In the form of the invention illustrated in Fig. 2, which is adapted forlarger sizes of centers, a plurality of paper units 10a are twistedindividually upon themselves and then plied together with a reversetwist to form what is termed the core of the center. There is thenplaced around this core the covering unit 11. In this instance, thecovering unit is substantially flat, as in the other embodiment of theinvention, and the individual convolutions preferably overlap. In thisembodiment, however, the covering unit is applied to the core with atwist reverse to that of the twist with which the individual core unitsare plied together. This combination of twists will also insure thecenter retaining its finished form at all times until incorporated in awire rope or cable.

If desired, a binder may be utilized, although it is not necessary dueto the peculiar formation of the center. 0n the other hand, a materialsuch as rubber latex might be used. By impregnating the paper unitstherewith, such material functions not only as a binder, but also tendsto water-proof the center and render it more or less non-conductiveelectrically. Whether or not such a binder is used, the present centeris as efficient as present day centers in that it readily lends itselfto accommodation of wire strands constituting the rope or cable, and, atthe same time, as before pointed out, production costs are loweredconsiderably, due to the reduced cost of the material itself, as well asto the reduction in manufacturing costs.

What I claim is:

A wire rope center composed essentially of a plurality of paper units,one of said units constituting a covering for the remaining units, saidremaining units being individually twisted in one direction and saidcovering unit being spirally wrapped around said remaining units in theopposite direction and constituting a tubular casing for said enclosedunits.

MILO C. DODGE.

